Airtac MK Series Multi-position Locking Cylinder MK25X45S
The AirTAC Airtac MK Series Multi-position Locking Cylinder MK25X45S is a genuine MK multi-mount cylinder (double acting), 25 mm bore. Its compact square body fixes from six directions and mounts side by side to save space. It delivers about 245.4 N of push force at 0.5 MPa. A bumper cushions the impact. As an MK unit a fixed rod stops the piston rod rotating.
- TypeMulti-mount, double acting
- SeriesMK (no-rotating)
- Bore25 mm
- Push thrust @0.5 MPa245.4 N
- Operating pressure0.15 - 1.0 MPa (22 - 145 psi)
- Port sizeM5x0.8
- CushionBumper
- MagnetWith magnet (sensor-ready)
- ThreadPT
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MK Series Multi-position Locking Cylinder MK25X45S
The AirTAC MK series is a compact square-body multi-mount cylinder that fixes from six directions - front, back, left, right, top and bottom - so cylinders can be mounted side by side to save space. This MK25X45S is the no-rotating double-acting version with a 25 mm bore and 45 mm stroke: the fixed rod and no-rotating plate prevent the piston rod from turning, keeping attached tooling square throughout the stroke. At 0.5 MPa it produces a theoretical 245.4 N on the push side, cushioning is a bumper, and magnetic-switch slots run around the body.
This is a genuine AirTAC part. MK differs from the standard MD family by preventing rod rotation, making it the choice where parts must not twist. As the SKU shows, this model includes a magnet (S) for switch-based position detection. Operating pressure for this bore is 0.15-1.0 MPa (22-145 psi), the medium is air filtered to 40 um, and the port is M5x0.8 with PT thread. Dimensions and sizing can be confirmed from the datasheet on request.
Airtac MK Series Multi-position Locking Cylinder MK25X45S Technical Specifications
| Model | Airtac MK Series Multi-position Locking Cylinder MK25X45S |
|---|---|
| Type | Multi-mount cylinder, double acting |
| Series | MK (no-rotating) |
| Bore | 25 mm |
| Push thrust @0.5 MPa | 245.4 N |
| Port size | M5x0.8 (PT thread) |
| Magnet | With magnet (S) |
| Fluid | Air, filtered to 40 um |
|---|---|
| Operating pressure | 0.15 - 1.0 MPa (22 - 145 psi) |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature | -20 to 70 C |
| Speed range | 30 - 500 mm/s |
| Cushion | Bumper |
| Mounting | Fix from 6 directions; mountable side by side |
Specifications follow the official AirTAC MD/MK multi-mount data. The front cover and piston are short, so avoid an over-long stroke. An optional high-temperature seal material extends the range to 0 to 150 C. Overall dimensions vary per stroke and allowable side-load is published as curves — ask us and we confirm from the datasheet.
How to choose
Match the bore to the thrust you need: this 25 mm bore gives a theoretical 245.4 N push at 0.5 MPa (206.2 N pull). Take MK when the rod must not rotate; take MD when rotation is harmless. The 45 mm double-acting stroke sits within the 60 mm table maximum for bore 25 - avoid pushing to the stroke limit, since the short cover means over-long strokes risk over-extending the rod assembly.
The MK family also offers single-acting push (MSK), single-acting pull (MTK), double rod (MKD), and adjustable stroke (MKJ) with a 10/20/30 mm adjustable range. The trailing S specifies the magnet; PT thread is the default with G available. Side-load figures are not stated here - route them through the datasheet with us.
Applications
Pick-and-place with square tooling
Carry parts between stations with pick fingers that must keep their facing; the no-rotating rod stops the tooling from twisting mid-transfer.
Indexing stopper on rotary tables
Stop or release parts at an indexing station; the compact body mounts side by side where standard tie-rod cylinders will not fit.
Fixture clamp on machining jigs
Clamp workpieces in machining jigs with a 45 mm stroke and 245.4 N push at 0.5 MPa, fixing the body from any of six faces.
FAQ
How much thrust does the MK25X45S produce?
At 0.5 MPa, the theoretical thrust of this 25 mm bore is 245.4 N on the push side and 206.2 N on the pull side - the push side is always higher on double-acting cylinders. Actual usable force depends on your operating pressure within the 0.15-1.0 MPa (22-145 psi) range.
Can I mount this cylinder from any face of the body?
Yes. As a multi-mount cylinder, the MK25X45S can be fixed from six directions: front, back, left, right, top and bottom. Combined with the square body, this lets you mount cylinders side by side and save space. Overall dimensions vary with stroke, so confirm them from the datasheet before designing the mounting.